1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
levacccp [35]
3 years ago
5

How many trophic levels do most food webs have? Why? Relate your answer to the appropriate law of thermodynamics

Biology
1 answer:
Anton [14]3 years ago
7 0

Answer:

Most food webs have between 4 and 5 trophic levels

Explanation:

Energy flow: From the whole quantity of energy that reaches the earth's surface, autotroph organisms or producers only absorb 0.1 or 1%.

From the input of solar energy begins a unidirectional energy flow. It passes through all the organisms in the ecosystem, from autotrophs to heterotrophs, until it is eventually dissipated in the environment.  

There is an energy transfer from each trophic level to the next, and each level only uses 10% of this energy. This assessment is called "The 10% rule". As a general rule, only about 10% of the energy stored as biomass at one trophic level, per unit time, ends up as biomass at the next trophic level, in the same unit of time. The rest of the energy is used by the organisms in their own metabolism or dissipated as heat to the environment.

The progressive reduction of energy determines the number of trophic levels, which, in general, turns to be between 4 and 5.  

You might be interested in
According to the graph, what condition is best for enzyme activity?
katrin [286]
Where is the graph? Please see to this.
8 0
4 years ago
Read 2 more answers
Class Mammalia is divided into two subgroups: marsupials and placental mammals.
White raven [17]

Answer:

The given statement is false.

Explanation:

The mammals can be differentiated into three main groups on the basis of the development of their babies. These three groups are marsupials, monotremes, and placental mammals, which is the largest group. The monotremes refer to the mammals, which lay eggs. The marsupials refer to the mammals, which give birth to young ones that are not developed completely. While in a placental mammal, the development takes place within the body of a mother until and unless its systems of the body start to work on their own.

3 0
3 years ago
What are food enzymes?
Llana [10]

there aren't many enzymes in food, mainly in fruits, the enzymes in friuts are very similar to ptylin found in the mouth that help break down sugar, they do not need to be ingested before they activate, a proof of this is the apple test, buy an apple, take a bite and leave it without covering it for a few minutes, you'll notice that the bitten part starts turning yellowish brown because the enzymes in the apple are already breaking it down.  

In summary, they do not need to be ingested before activation, and the major characteristic of an enzyme is that they do not change after they react with (breakdown) food, so they are in the same form before and after they finish breaking down the food.

8 0
4 years ago
Read 2 more answers
In what situation would water be considered a non-renewable resource
Irina18 [472]

Answer:

Me personally I feel as water will always be a renewable resource, Now we have technology to the point where we can reuse the water we have already used indefinitely whither that be through the process of distillation, Or filter bad products out of the water at water plants. The situation I can think of is if the water has contact with nuclear waste or was used at a cooling plant for nuclear waste.

6 0
3 years ago
Read 2 more answers
When a drug blocks reuptake or breakdown of a neurotransmitter by the action of enzymes, the drug is acting as an _____?
umka2103 [35]
<span>SNRI- Selective neurotransmitter reuptake inhibitor. Drugs that have use this mechanism of operation can increase the presence of the targeted neurotransmitter in a subject as more of the neurotransmitter remains freely available. This class of drugs is commonly used in the treatment of depression and other maladies where neurotransmitter levels can affect subject outcomes.</span>
4 0
3 years ago
Other questions:
  • WILL GIVE A BRAINLEST
    14·2 answers
  • What following organisms is considered to be an exception to the cell theory
    6·1 answer
  • Imagine that you attempted to recreate Mendel's work with garden peas. You began by crossing true breeding violet-flowered, tall
    11·1 answer
  • PLEASE HELP!!!!
    6·2 answers
  • Saturn _____.
    9·2 answers
  • What type of bonds connect the deoxyribose sugars to the phosphate groups?
    11·1 answer
  • Please help meeee asap
    9·1 answer
  • If the prey population increases, the predator population will__
    11·2 answers
  • How do cells make more ATP when they run out? <br><br> HELP PLZ
    8·1 answer
  • Which statement is true about photosynthesis and cellular respiration?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!